在编写代码的时候有个神奇的工具总是好的！下面这里收集了 40+ php 代码片段，可以帮助你开发 php 项目。
这些 php 片段对于 php 初学者也非常有帮助，非常容易学习，让我们开始学习吧～
1. 发送 sms 在开发 web 或者移动应用的时候，经常会遇到需要发送 sms 给用户，或者因为登录原因，或者是为了发送信息。下面的 php 代码就实现了发送 sms 的功能。
为了使用任何的语言发送 sms，需要一个 sms gateway。大部分的 sms 会提供一个 api，这里是使用 msg91作为 sms gateway。
function send_sms($mobile,$msg){$authkey = xxxxxxxxxxx;date_default_timezone_set(asia/kolkata);$date = strftime(%y-%m-%d %h:%m:%s);//multiple mobiles numbers separated by comma$mobilenumber = $mobile; //sender id,while using route4 sender id should be 6 characters long.$senderid = ikoonk; //your message to send, add url encoding here.$message = urlencode($msg); //define route $route = template;//prepare you post parameters$postdata = array( 'authkey' => $authkey, 'mobiles' => $mobilenumber, 'message' => $message, 'sender' => $senderid, 'route' => $route); //api url$url=https://control.msg91.com/sendhttp.php; // init the resource$ch = curl_init();curl_setopt_array($ch, array( curlopt_url => $url, curlopt_returntransfer => true, curlopt_post => true, curlopt_postfields => $postdata //,curlopt_followlocation => true)); //ignore ssl certificate verificationcurl_setopt($ch, curlopt_ssl_verifyhost, 0);curl_setopt($ch, curlopt_ssl_verifypeer, 0); //get response$output = curl_exec($ch);//print error if anyif(curl_errno($ch)){ echo 'error:' . curl_error($ch);} curl_close($ch);}
其中“$authkey = xxxxxxxxxxx;”需要你输入你的密码，“$senderid = ikoonk;”需要你输入你的 senderid。当输入移动号码的时候需要指定国家代码 (比如，美国是 1，印度是 91 )。
语法：

2. 使用 mandrill 发送邮件 mandrill是一款强大的 smtp 提供器。开发者倾向于使用一个第三方 smtp provider 来获取更好的收件交付。
下面的函数中，你需要把 “ mandrill.php” 放在同一个文件夹，作为 php 文件，这样就可以使用ta来发送邮件。
function send_email($to_email,$subject,$message1){require_once 'mandrill.php';$apikey = 'xxxxxxxxxx'; //specify your api key here$mandrill = new mandrill($apikey); $message = new stdclass();$message->html = $message1;$message->text = $message1;$message->subject = $subject;$message->from_email = blog@koonk.com;//sender email$message->from_name = koonk;//sender name$message->to = array(array(email => $to_email));$message->track_opens = true; $response = $mandrill->messages->send($message);}
$apikey = 'xxxxxxxxxx'; //specify your api key here”这里需要你指定你的 api 密钥（从 mandrill 账户中获得）。
语法：

为了达到最好的效果，最好按照 mandrill 的教程去配置 dns。
3. php 函数：阻止 sql 注入 sql 注入或者 sqli 常见的攻击网站的手段，使用下面的代码可以帮助你防止这些工具。
function clean($input){ if (is_array($input)) { foreach ($input as $key => $val) { $output[$key] = clean($val); // $output[$key] = $this->clean($val); } } else { $output = (string) $input; // if magic quotes is on then use strip slashes if (get_magic_quotes_gpc()) { $output = stripslashes($output); } // $output = strip_tags($output); $output = htmlentities($output, ent_quotes, 'utf-8'); }// return the clean text return $output;}
语法：

4. 检测用户位置 使用下面的函数，可以检测用户是在哪个城市访问你的网站
function detect_city($ip) { $default = 'unknown'; $curlopt_useragent = 'mozilla/5.0 (windows; u; windows nt 5.1; en-us; rv:1.9.2) gecko/20100115 firefox/3.6 (.net clr 3.5.30729)'; $url = 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode($ip); $ch = curl_init(); $curl_opt = array( curlopt_followlocation => 1, curlopt_header => 0, curlopt_returntransfer => 1, curlopt_useragent => $curlopt_useragent, curlopt_url => $url, curlopt_timeout => 1, curlopt_referer => 'http://' . $_server['http_host'], ); curl_setopt_array($ch, $curl_opt); $content = curl_exec($ch); if (!is_null($curl_info)) { $curl_info = curl_getinfo($ch); } curl_close($ch); if ( preg_match('{city : ([^likes; return $likes;}
语法：
7. 确定任意图片的主导颜色 function dominant_color($image){$i = imagecreatefromjpeg($image);for ($x=0;$x 16) & 0xff; $g = ($rgb >> & 0xff; $b = $rgb & 0xff; $rtotal += $r; $gtotal += $g; $btotal += $b; $total++; }}$raverage = round($rtotal/$total);$gaverage = round($gtotal/$total);$baverage = round($btotal/$total);}
8. whois 查询 使用下面的函数可以获取任何域名用户的完整细节
function whois_query($domain) { // fix the domain name: $domain = strtolower(trim($domain)); $domain = preg_replace('/^http:\/\//i', '', $domain); $domain = preg_replace('/^www\./i', '', $domain); $domain = explode('/', $domain); $domain = trim($domain[0]); // split the tld from domain name $_domain = explode('.', $domain); $lst = count($_domain)-1; $ext = $_domain[$lst]; // you find resources and lists // like these on wikipedia: // // http://de.wikipedia.org/wiki/whois // $servers = array( biz => whois.neulevel.biz, com => whois.internic.net, us => whois.nic.us, coop => whois.nic.coop, info => whois.nic.info, name => whois.nic.name, net => whois.internic.net, gov => whois.nic.gov, edu => whois.internic.net, mil => rs.internic.net, int => whois.iana.org, ac => whois.nic.ac, ae => whois.uaenic.ae, at => whois.ripe.net, au => whois.aunic.net, be => whois.dns.be, bg => whois.ripe.net, br => whois.registro.br, bz => whois.belizenic.bz, ca => whois.cira.ca, cc => whois.nic.cc, ch => whois.nic.ch, cl => whois.nic.cl, cn => whois.cnnic.net.cn, cz => whois.nic.cz, de => whois.nic.de, fr => whois.nic.fr, hu => whois.nic.hu, ie => whois.domainregistry.ie, il => whois.isoc.org.il, in => whois.ncst.ernet.in, ir => whois.nic.ir, mc => whois.ripe.net, to => whois.tonic.to, tv => whois.tv, ru => whois.ripn.net, org => whois.pir.org, aero => whois.information.aero, nl => whois.domain-registry.nl ); if (!isset($servers[$ext])){ die('error: no matching nic server found!'); } $nic_server = $servers[$ext]; $output = ''; // connect to whois server: if ($conn = fsockopen ($nic_server, 43)) { fputs($conn, $domain.\r\n); while(!feof($conn)) { $output .= fgets($conn,128); } fclose($conn); } else { die('error: could not connect to ' . $nic_server . '!'); } return $output;}
语法：

9. 验证邮箱地址 有时候，当在网站填写表单，用户可能会输入错误的邮箱地址，这个函数可以验证邮箱地址是否有效。
function is_validemail($email){$check = 0;if(filter_var($email,filter_validate_email)){$check = 1;}return $check;} 语法：
10. 获取用户的真实 ip function getrealipaddr() { if (!emptyempty($_server['http_client_ip'])) { $ip=$_server['http_client_ip']; } elseif (!emptyempty($_server['http_x_forwarded_for'])) //to check ip is pass from proxy { $ip=$_server['http_x_forwarded_for']; } else { $ip=$_server['remote_addr']; } return $ip; }
语法：
11. 转换 url：从字符串变成超链接 如果你正在开发论坛，博客或者是一个常规的表单提交，很多时候都要用户访问一个网站。使用这个函数，url 字符串就可以自动的转换为超链接。
function makeclickablelinks($text) { $text = eregi_replace('(((f|ht){1}tp://)[-a-za-z0-9@:%_+.~#?&//=]+)', '\1', $text); $text = eregi_replace('([[:space:]()[{}])(www.[-a-za-z0-9@:%_+.~#?&//=]+)', '\1\2', $text); $text = eregi_replace('([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})', '\1', $text); return $text; } 语法：
12. 阻止多个 ip 访问你的网站 这个代码片段可以方便你禁止某些特定的 ip 地址访问你的网站
if ( !file_exists('blocked_ips.txt') ) { $deny_ips = array( '127.0.0.1', '192.168.1.1', '83.76.27.9', '192.168.1.163' );} else { $deny_ips = file('blocked_ips.txt');}// read user ip adress:$ip = isset($_server['remote_addr']) ? trim($_server['remote_addr']) : ''; // search current ip in $deny_ips arrayif ( (array_search($ip, $deny_ips))!== false ) { // address is blocked: echo 'your ip adress ('.$ip.') was blocked!'; exit;}
13. 强制性文件下载 如果你需要下载特定的文件而不用另开新窗口，下面的代码片段可以帮助你。
function force_download($file) { $dir = ../log/exports/; if ((isset($file))&&(file_exists($dir.$file))) { header(content-type: application/force-download); header('content-disposition: inline; filename=' . $dir.$file . ''); header(content-transfer-encoding: binary); header(content-length: .filesize($dir.$file)); header('content-type: application/octet-stream'); header('content-disposition: attachment; filename=' . $file . ''); readfile($dir$file); } else { echo no file selected; } }
语法：

14. 创建 json 数据 使用下面的 php 片段可以创建 json 数据，可以方便你创建移动应用的 web 服务
$json_data = array ('id'=>1,'name'=>mohit);echo json_encode($json_data);
15. 压缩 zip 文件 使用下面的 php 片段可以即时压缩 zip 文件
function create_zip($files = array(),$destination = '',$overwrite = false) { //if the zip file already exists and overwrite is false, return false if(file_exists($destination) && !$overwrite) { return false; } //vars $valid_files = array(); //if files were passed in... if(is_array($files)) { //cycle through each file foreach($files as $file) { //make sure the file exists if(file_exists($file)) { $valid_files[] = $file; } } } //if we have good files... if(count($valid_files)) { //create the archive $zip = new ziparchive(); if($zip->open($destination,$overwrite ? ziparchive::overwrite : ziparchive::create) !== true) { return false; } //add the files foreach($valid_files as $file) { $zip->addfile($file,$file); } //debug //echo 'the zip archive contains ',$zip->numfiles,' files with a status of ',$zip->status; //close the zip -- done! $zip->close(); //check to make sure the file exists return file_exists($destination); } else { return false; } } 语法：
16. 解压文件 function unzip($location,$newlocation){ if(exec(unzip $location,$arr)){ mkdir($newlocation); for($i = 1;$i0){$r.=', ';}} if($secs>=3600){$hours=floor($secs/3600);$secs=$secs%3600;$r.=$hours.' hour';if($hours1){$r.='s';}if($secs>0){$r.=', ';}} if($secs>=60){$minutes=floor($secs/60);$secs=$secs%60;$r.=$minutes.' minute';if($minutes1){$r.='s';}if($secs>0){$r.=', ';}} $r.=$secs.' second';if($secs1){$r.='s';} return $r;}
语法：
20. 数据库连接 连接 mysql 数据库

21. 目录清单 使用下面的 php 代码片段可以在一个目录中列出所有文件和文件夹
function list_files($dir){ if(is_dir($dir)) { if($handle = opendir($dir)) { while(($file = readdir($handle)) !== false) { if($file != . && $file != .. && $file != thumbs.db/*pesky windows, images..*/) { echo ''.$file.''.\n; } } closedir($handle); } }}
语法：

22. 检测用户语言 使用下面的 php 代码片段可以检测用户浏览器所使用的语言
function get_client_language($availablelanguages, $default='en'){ if (isset($_server['http_accept_language'])) { $langs=explode(',',$_server['http_accept_language']); foreach ($langs as $value){ $choice=substr($value,0,2); if(in_array($choice, $availablelanguages)){ return $choice; } } } return $default;}
23. 查看 csv 文件 function readcsv($csvfile){ $file_handle = fopen($csvfile, 'r'); while (!feof($file_handle) ) { $line_of_text[] = fgetcsv($file_handle, 1024); } fclose($file_handle); return $line_of_text;} 语法：
24. 从 php 数据创建 csv 文件 function generatecsv($data, $delimiter = ',', $enclosure = '') { $handle = fopen('php://temp', 'r+'); foreach ($data as $line) { fputcsv($handle, $line, $delimiter, $enclosure); } rewind($handle); while (!feof($handle)) { $contents .= fread($handle, 8192); } fclose($handle); return $contents;} 语法：
25. 解析 xml 数据 $xml_string= ben a h2o k ; //load the xml string using simplexml function$xml = simplexml_load_string($xml_string); //loop through the each node of moleculeforeach ($xml->molecule as $record){ //attribute are accessted by echo $record['name'], ' '; //node are accessted by -> operator echo $record->symbol, ' '; echo $record->code, '';}
26. 解析 json 数据 $json_string='{id:1,name:rolf,country:russia,office:[google,oracle]} ';$obj=json_decode($json_string);//print the parsed dataecho $obj->name; //displays rolfecho $obj->office[0]; //displays google
27. 获取当前页面 url 这个 php 片段可以帮助你让用户登录后直接跳转到之前浏览的页面
function current_url(){$url = http:// . $_server['http_host'] . $_server['request_uri'];$validurl = str_replace(&, &, $url);return validurl;}
语法：

28. 从任意的 twitter 账号获取最新的 tweet function my_twitter($username) { $no_of_tweets = 1; $feed = http://search.twitter.com/search.atom?q=from: . $username . &rpp= . $no_of_tweets; $xml = simplexml_load_file($feed); foreach($xml->children() as $child) { foreach ($child as $value) { if($value->getname() == link) $link = $value['href']; if($value->getname() == content) { $content = $value . ; echo ''.$content.'
'; } } } } 语法：
29. 转发数量 使用这个 php 片段可以检测你的页面 url 有多少转发数量
function tweetcount($url) { $content = file_get_contents(http://api.tweetmeme.com/url_info?url=.$url); $element = new simplexmlelement($content); $retweets = $element->story->url_count; if($retweets){ return $retweets; } else { return 0; }} 语法：
30. 计算两个日期的差 diff($date2);echo difference . $interval->y . years, . $interval->m. months, .$interval->d. days ; // shows the total amount of days (not divided into years, months and days like above)echo difference . $interval->days . days ;-------------------------------------------------------- or /** * calculate differences between two dates with precise semantics. based on phps datetime::diff() * implementation by derick rethans. ported to php by emil h, 2011-05-02. no rights reserved. * * see here for original code: * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c?revision=302890&view=markup * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/interval.c?revision=298973&view=markup */function _date_range_limit($start, $end, $adj, $a, $b, $result){ if ($result[$a] = $end) { $result[$b] += intval($result[$a] / $adj); $result[$a] -= $adj * intval($result[$a] / $adj); } return $result;}function _date_range_limit_days($base, $result){ $days_in_month_leap = array(31, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); $days_in_month = array(31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); _date_range_limit(1, 13, 12, m, y, &$base); $year = $base[y]; $month = $base[m]; if (!$result[invert]) { while ($result[d] 31. 删除文件夹内容 function delete($path){ if (is_dir($path) === true) { $files = array_diff(scandir($path), array('.', '..')); foreach ($files as $file) { delete(realpath($path) . '/' . $file); } return rmdir($path); } else if (is_file($path) === true) { return unlink($path); } return false;}
语法：

32. 搜索和高亮字符串中的关键字 function highlighter_text($text, $words){ $split_words = explode( , $words ); foreach($split_words as $word) { $color = #4285f4; $text = preg_replace(|($word)|ui , $1 , $text ); } return $text;}
语法：

33. 写入文件
34. 根据 url 下载图片 function imagefromurl($image,$rename){$ch = curl_init($image);curl_setopt($ch, curlopt_header, 0);curl_setopt($ch, curlopt_returntransfer, 1);curl_setopt($ch, curlopt_binarytransfer,1);$rawdata=curl_exec ($ch);curl_close ($ch);$fp = fopen($rename,'w');fwrite($fp, $rawdata); fclose($fp);}
语法：

35. 检测 url 是否有效 function isvalidurl($url){$check = 0;if (filter_var($url, filter_validate_url) !== false) { $check = 1;}return $check;} 语法：
36. 生成二维码 function qr_code($data, $type = txt, $size ='150', $ec='l', $margin='0') { $types = array(url =--> http://, tel => tel:, txt=>, email => mailto:); if(!in_array($type,array(url, tel, txt, email))) { $type = txt; } if (!preg_match('/^'.$types[$type].'/', $data)) { $data = str_replace(\\, , $types[$type]).$data; } $ch = curl_init(); $data = urlencode($data); curl_setopt($ch, curlopt_url, 'http://chart.apis.google.com/chart'); curl_setopt($ch, curlopt_post, true); curl_setopt($ch, curlopt_postfields, 'chs='.$size.'x'.$size.'&cht=qr&chld='.$ec.'|'.$margin.'&chl='.$data); curl_setopt($ch, curlopt_returntransfer, true); curl_setopt($ch, curlopt_header, false); curl_setopt($ch, curlopt_timeout, 30); $response = curl_exec($ch); curl_close($ch); return $response;}
语法：

37. 计算两个地图坐标之间的距离 function getdistancebetweenpointsnew($latitude1, $longitude1, $latitude2, $longitude2) { $theta = $longitude1 - $longitude2; $miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta))); $miles = acos($miles); $miles = rad2deg($miles); $miles = $miles * 60 * 1.1515; $feet = $miles * 5280; $yards = $feet / 3; $kilometers = $miles * 1.609344; $meters = $kilometers * 1000; return compact('miles','feet','yards','kilometers','meters'); }
语法：
40.770623, 'long' => -73.964367);$point2 = array('lat' => 40.758224, 'long' => -73.917404);$distance = getdistancebetweenpointsnew($point1['lat'], $point1['long'], $point2['lat'], $point2['long']);foreach ($distance as $unit => $value) { echo $unit.': '.number_format($value,4).'';}?>
38. 获取一个特定话题标签的所有 tweets function gettweets($hash_tag) { $url = 'http://search.twitter.com/search.atom?q='.urlencode($hash_tag) ; echo connecting to $url ...
; $ch = curl_init($url); curl_setopt ($ch, curlopt_returntransfer, true); $xml = curl_exec ($ch); curl_close ($ch); //if you want to see the response from twitter, uncomment this next part out: //echo response:
; //echo .htmlspecialchars($xml).
; $affected = 0; $twelement = new simplexmlelement($xml); foreach ($twelement->entry as $entry) { $text = trim($entry->title); $author = trim($entry->author->name); $time = strtotime($entry->published); $id = $entry->id; echo tweet from .$author.: .$text. posted .date('n/j/y g:i a',$time).
; } return true ;} 39. 添加 th,st,nd 或者 rd 作为数字的后缀 friday the 13thfunction ordinal($cdnl){ $test_c = abs($cdnl) % 10; $ext = ((abs($cdnl) %100 4) ? 'th' : (($test_c < 4) ? ($test_c < 3) ? ($test_c save as):\n\t\t; echo flv\n\t\t; echo hq flv (if available)\n\t\t; echo mp4\n\t\t; echo 3gp\n;}
46. facebook 样式的时间戳 facebook (x mins age, y hours ago etc)function nicetime($date){ if(empty($date)) { return no date provided; } $periods = array(second, minute, hour, day, week, month, year, decade); $lengths = array(60,60,24,7,4.35,12,10); $now = time(); $unix_date = strtotime($date); // check validity of date if(empty($unix_date)) { return bad date; } // is it future date or past date if($now > $unix_date) { $difference = $now - $unix_date; $tense = ago; } else { $difference = $unix_date - $now; $tense = from now; } for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) { $difference /= $lengths[$j]; } $difference = round($difference); if($difference != 1) { $periods[$j].= s; } return $difference $periods[$j] {$tense};}
语法：

：http://blog.koonk.com  （）